President says he is concerned author may be involved in discussions about national-security issues

WASHINGTON—President Trump said Friday he wants Attorney General Jeff Sessions to launch an investigation into who in his administration penned a critical anonymous opinion column this week.

“Jeff should be investigating who the author of that piece was because I really believe it’s national security,” Mr. Trump told reporters Friday aboard Air Force One, adding that he was concerned the author may be involved in discussions about national-security issues. “I don’t want him in those meetings.”

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